Keep in mind that these trees are going to get bigger. I am assuming that these are 2 different houses...?---Of the 4 designs pictured I like #3 the best (the quasi-Japanese garden effect), but feel that you should have Japanese maples in there. If that is, in fact, the effect you're going for. I think that your designs need a comprehensive theme. They strike me as being a little of this, a little of that. Decide on your main idea---e.g., Japanese garden---and then select all elements to support the idea.
i try design it as chinese style.maybe chinese and Japanese garden is different,but some is same.thank your good advice.